Computing-scale.



E. H. CLUTTER.

COMPUTING SCALE.

APPLICATION FILED KAB.28,1912.

Patented July 8, 1913.

2 SHEETS-SHEET l.

5 a w M $15 W m E. H. CLUTTER.

COMPUTING SCALE.

APPLICATION FILED MAB.26,1912.

Patented July 8, 1913.

2 SHEETS-SHEET 2.

Svwewtoz ZJZ 5%11 arrow;-

such manner as to-enable .a corraotreading ELMEB H. CLUTTEB, O1INNISTEEE, ALBEMA, CENADA.

CWTPHG-SCALE.

Specification of Letters Patent.

Patented July 8, 1913.

Appllcation filcd Burch 28, 19.12. Serial No. 888,435.

To all it may concern:

Be it known that I, Emma H. Cuzm' run,

a subject of the King of Great Britain, residing at Innisfree, in thePronince-of Alberta and Dominion of Canada, have invented new and usefulImprovements in Computing-Scales, of which the following is aspecification- My present invention relates to. improvements incomputing scales and has-particular application to. weighing orbalancing mechanisms for such scales. In carrying out this invention, itis my purpose toprovide ascaleof this type wherein by meansof aluralisty of weighted elements, the weight. ofthc loodmay be dotermined, certain 0t such elements counteracting the remaining elements.so that a cor rect reading may be obtained firom the indicating meansupon the application oi-a load to the scales.

It is also my M so to provide a scale of this character w rein a loadreceiving platform may be actuated under the action of a load to impartmovement toan' indicating means through the medium of a weigh.- ing orbalancing mechanismconstructed in to be obtained .firom the indicatingmeans.

Theinvention also involves a we gor balancing mechanism composed inescnt instance, of a plurality ofi power weights and a balancing weiht,.and incanscomiecting the power weighs to the balancing weight sothatthe latter may be gradually relieved of the influence of the former Iweights under the action of the load. receivlng platform, the power wets assisting the atformin elevating a balancing weig t to actuate theindicat' means in order to determine the weight oi the load.-

7 been illustratedthe preferred form of my invention; Figure l is a sideelevation of a scale embodying the present invention. Fig. 2 is acentral vertical section through the vertical portion of the scal;showing the parts in their normal positions. Fig. 3 is a. view similarto Fig. 2 illustrating theparts in their actuated positions. Fig. 4 isan enlarged detail view of the balancing mechr anism and its support,removed ilrom the scale, and Fig. 5 is a vertical sectional view takenat right angles to Fig. 2..

Similar reference characters designate like parts throughout the severalviews.

Referring .nowto. the accompanyingdrawings-in detail, the scale, in thepresent instance, is shown to. be of the oscillating drum type,comprisinga. horizontal base A, a vertical standard B and a drum housingor casin C fixed upon the upper end of the standa F ixed upon. the andof the base A opposite from the standard, is a station.- a-ry bearing 1consisting of a cross piece 2 fasened b38318 base in any suitagle manneran rovi at. its a ite on wit u standing bearing posts iPivoted in the ebearing posts, upon kniieedge hearings or the like, is what may betermed a weighing platform 4 equipped: in on. its opposite sides withtrunnionsfi, .whic 1 may be off the knits edge type, arranged in rid thebearing posts 3 with. respect-to l l ieiorward end of the scale. Mountedupon these trunnions 5 is a hanger 6 cqmi d at its opposite ends withhearing brac ots 'l which engage the trimnims 5 and hold: the hangersuspended. from the weighing platform. At a. suitable point between thebrackets 7, preferably centrally, the hmzger't is provided with anupstanding block 8 which projects through an, 9- in the platform 4.Securely fastened to-thc birch-8 above the weighing platform and 8 needfrom the latter,- by means .ot such ck, is a load receiving pliatform101. be seen that the load: receiving platform maintains a. h0rizontal=sition at all times, irrespective: of the position of the base A andwhile I have. shown and described one form of balancing mechanism forthe load receiving platform, it :is to be understood that I do not limitmyself to the specific construction and arrangement of parts justdescribed.

From this. construction it will ios Thestandard B which is secured tothe] rear end of the' base relative to the load receiving platformconsists of, preferably, though not necessarily, a pair of spacedparallel plates 11, 11 connected at their upper and lower ends by meansof cross pieces 12, 12, the lower one of which is adapted to receivebolts or other suitable fastening devices so that the standard mayberigidly secured to the base, while the upper of such pieces has securelyfastened 14, 14 are alining bearings 17, 17 in which is journaled ashaft 18 carrying an indicating drum 19 herein shown as comprising thetwo drum sections 20, 2O spaced from each other upon the shaft andarranged at the opposite sides of the transverse center line thereof.Upon these drum sections are numerals indicating weights and totalvalues, or other suitable indicia, such data being readable throughslots 21 formed in the segmental sections of the housing, the wire 22 orsimilar indicator being arranged within such slots to obtain a correctreading from the drum in the movement of the latter under the action ofthe load receiving platform.

The drum sections 20, 20 and shaft 18 are, in the present embodiment ofmy invention, subject to an oscillatoryvmoveme'nt and to receive suchmovement, the drum shaft is connected by means of a flexible connection23 with the weighing platform 4, the latter being provided with arearwardly extending arm 24 carrying a hook 25 designed to receive thelower extremity of the flexible con,- nection 23, the upper extremity ofsuch connection being fastened to the central part of the drum shaftintermediate the drum sec tions. A weight 26 is fastened to the arm '24to maintain the parts in their normal positions, when no load is uponthe platform.-

In order to actuate the indicating drum from the load receiving platformso that a proper reading may be obtained therefrom in the applicationpfa load to such platform, I have provided a weighing or balancingmechanism disposed intermediate the indicating means and the loadreceiving platform and adapted to be operated from the latter. Thismechanism is supported by means of a yoke 27 pivotally mounted inbrackets 28 depending from the lower side of the, upper cross piece 12of the standard so that the mechanism may hang true or plumbirrespective of the position of the base. The opposite arms 29, 29 ofthe yoke have their free end portions bifurcated as at 30 and providedwith alining openings 31 adapted to receive pivot pins'32 upon which aremounted disks 33, each carrying a radial arm 34 equipped at its free endwith a weight 35, the weights being threaded onto or otherwise suitablysecured to the arms. These weights 35 will be termed hereinafter powerweights, and to the disk 33 of each.

weight is fastened one end of a flexible element 36 such as a metallicribbon, band or the like, which element-is trained over a por. tion ofthe periphery of its respective disk and terminates in a hook 37designed to en'- gage a staple or the'like 38 carried by a weight 39which latter weight may be termed a balance weight. Passing through. anaperture in the balance weight, is a rod 40 having threaded onto itslower end a nut 41 and terminating at its upper end in a hooi 42designed to receive one end of a flexible connection 43, the oppositeend of which is secured to the drum shaft 19 at a point substantiallydiametrically opposite to the corn nection between the flexibleconnection and such shaft, the flexible connections and 43 serving torotate or oscillate the shaft in relatively reverse directions.

The operation of the balancing mechanism just described may be'brieflystated as follows: When a load is placed upon the load,receivingplatform, the latter through tlie medium of the weighingplat-form and arm 24 exerts a downward pull upon the flexible connection23, thereby imparting movement to the drum shaft to rotate the drums andbring the proper figures into registration with the slots in thesideWalls .of the housing C and the indicator in such slots so that areading may be obtained from the drum to ascertain the weight ofthe-load. In the downward movement of the flexible connection 23, thesimilar connection 43-is drawn upwardly, owing to the movement of theshaft and its connection therewith, and

ios

carries with it the balance weight 39, the,

power weights 35 assisting the weighing platform to elevate the balanceweight, As the power weights near their center ofgravity, the balanceweight is gradually relieved of the influence or force of suchwcight andwhen the'power weights reach their center.

of gravity, the balance weight is rentirely free from the effect ofitheformer, thereby enabling the weight 39 to balance the weight of the loadon the platform. By meanslof nut 41, the balance weight may be adjustedto take up any inequalities in the mechanism.

WVhilc I have herein shown and described oneform of my invention, 'byway of illus-ztration, I desire to have it understood that I do notconfine myself to all of the details of construction herein set forth,as modification and variation ma be made within the scope of the appendeclaims and without departing from the spirit of my invention.

I claim:

1. The combination with a load receiving platform, and indicating means,of a balancing mechanism between the platform and means, said mechanismcomprising a plurality of power weights, and a balancing weight, andmeans connecting the first-mentioned weights to the balancing weight,whereby the latter may be gradually relieved of the influence of thepower weights under the action of the load receiving platform, and meansfor holding said balancing mechanism plumb.

2. The combination with a load receiving platform, and indicating means,of a balancing mechanism between the platform and means, said mechanismcomprising a yoke, a pair of disks pivoted in said yoke, arms radiatingfrom said disks, power weights upon sail arms, and a balance weight,connections between said balance weight and the first-mentioned weightsand between the-

